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// SPDX-License-Identifier: MIT
pragma solidity >=0.8.17 <0.9.0;

import {ERC165} from "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {Address} from "@openzeppelin/contracts/utils/Address.sol";
import {LowLevelCallUtils} from "./LowLevelCallUtils.sol";
import {ENS} from "../registry/ENS.sol";
import {IExtendedResolver} from "../resolvers/profiles/IExtendedResolver.sol";
import {Resolver, INameResolver, IAddrResolver} from "../resolvers/Resolver.sol";
import {NameEncoder} from "./NameEncoder.sol";
import {BytesUtils} from "../wrapper/BytesUtils.sol";
import {HexUtils} from "./HexUtils.sol";

error OffchainLookup(
    address sender,
    string[] urls,
    bytes callData,
    bytes4 callbackFunction,
    bytes extraData
);

struct MulticallData {
    bytes name;
    bytes[] data;
    string[] gateways;
    bytes4 callbackFunction;
    address resolver;
    bytes metaData;
    bool[] failures;
}

struct OffchainLookupCallData {
    address sender;
    string[] urls;
    bytes callData;
}

struct OffchainLookupExtraData {
    bytes4 callbackFunction;
    bytes data;
}

interface BatchGateway {
    function query(
        OffchainLookupCallData[] memory data
    ) external returns (bool[] memory failures, bytes[] memory responses);
}

/**
 * The Universal Resolver is a contract that handles the work of resolving a name entirely onchain,
 * making it possible to make a single smart contract call to resolve an ENS name.
 */
contract UniversalResolver is ERC165, Ownable {
    using Address for address;
    using NameEncoder for string;
    using BytesUtils for bytes;
    using HexUtils for bytes;

    string[] public batchGatewayURLs;
    ENS public immutable registry;

    constructor(address _registry, string[] memory _urls) {
        registry = ENS(_registry);
        batchGatewayURLs = _urls;
    }

    function setGatewayURLs(string[] memory _urls) public onlyOwner {
        batchGatewayURLs = _urls;
    }

    /**
     * @dev Performs ENS name resolution for the supplied name and resolution data.
     * @param name The name to resolve, in normalised and DNS-encoded form.
     * @param data The resolution data, as specified in ENSIP-10.
     * @return The result of resolving the name.
     */
    function resolve(
        bytes calldata name,
        bytes memory data
    ) external view returns (bytes memory, address) {
        return
            _resolveSingle(
                name,
                data,
                batchGatewayURLs,
                this.resolveSingleCallback.selector,
                ""
            );
    }

    function resolve(
        bytes calldata name,
        bytes[] memory data
    ) external view returns (bytes[] memory, address) {
        return resolve(name, data, batchGatewayURLs);
    }

    function resolve(
        bytes calldata name,
        bytes memory data,
        string[] memory gateways
    ) external view returns (bytes memory, address) {
        return
            _resolveSingle(
                name,
                data,
                gateways,
                this.resolveSingleCallback.selector,
                ""
            );
    }

    function resolve(
        bytes calldata name,
        bytes[] memory data,
        string[] memory gateways
    ) public view returns (bytes[] memory, address) {
        return
            _resolve(name, data, gateways, this.resolveCallback.selector, "");
    }

    function _resolveSingle(
        bytes calldata name,
        bytes memory data,
        string[] memory gateways,
        bytes4 callbackFunction,
        bytes memory metaData
    ) public view returns (bytes memory, address) {
        bytes[] memory dataArr = new bytes[](1);
        dataArr[0] = data;
        (bytes[] memory results, address resolver) = _resolve(
            name,
            dataArr,
            gateways,
            callbackFunction,
            metaData
        );
        return (results[0], resolver);
    }

    function _resolve(
        bytes calldata name,
        bytes[] memory data,
        string[] memory gateways,
        bytes4 callbackFunction,
        bytes memory metaData
    ) internal view returns (bytes[] memory results, address resolverAddress) {
        (Resolver resolver, ) = findResolver(name);
        resolverAddress = address(resolver);
        if (resolverAddress == address(0)) {
            return (results, address(0));
        }

        results = _multicall(
            MulticallData(
                name,
                data,
                gateways,
                callbackFunction,
                resolverAddress,
                metaData,
                new bool[](data.length)
            )
        );
    }

    function reverse(
        bytes calldata reverseName
    ) external view returns (string memory, address, address, address) {
        return reverse(reverseName, batchGatewayURLs);
    }

    /**
     * @dev Performs ENS name reverse resolution for the supplied reverse name.
     * @param reverseName The reverse name to resolve, in normalised and DNS-encoded form. e.g. b6E040C9ECAaE172a89bD561c5F73e1C48d28cd9.addr.reverse
     * @return The resolved name, the resolved address, the reverse resolver address, and the resolver address.
     */
    function reverse(
        bytes calldata reverseName,
        string[] memory gateways
    ) public view returns (string memory, address, address, address) {
        bytes memory encodedCall = abi.encodeCall(
            INameResolver.name,
            reverseName.namehash(0)
        );
        (
            bytes memory resolvedReverseData,
            address reverseResolverAddress
        ) = _resolveSingle(
                reverseName,
                encodedCall,
                gateways,
                this.reverseCallback.selector,
                ""
            );

        return
            getForwardDataFromReverse(
                resolvedReverseData,
                reverseResolverAddress,
                gateways
            );
    }

    function getForwardDataFromReverse(
        bytes memory resolvedReverseData,
        address reverseResolverAddress,
        string[] memory gateways
    ) internal view returns (string memory, address, address, address) {
        string memory resolvedName = abi.decode(resolvedReverseData, (string));

        (bytes memory encodedName, bytes32 namehash) = resolvedName
            .dnsEncodeName();

        bytes memory encodedCall = abi.encodeCall(IAddrResolver.addr, namehash);
        bytes memory metaData = abi.encode(
            resolvedName,
            reverseResolverAddress
        );
        (bytes memory resolvedData, address resolverAddress) = this
            ._resolveSingle(
                encodedName,
                encodedCall,
                gateways,
                this.reverseCallback.selector,
                metaData
            );

        address resolvedAddress = abi.decode(resolvedData, (address));

        return (
            resolvedName,
            resolvedAddress,
            reverseResolverAddress,
            resolverAddress
        );
    }

    function resolveSingleCallback(
        bytes calldata response,
        bytes calldata extraData
    ) external view returns (bytes memory, address) {
        (bytes[] memory results, address resolver, , ) = _resolveCallback(
            response,
            extraData,
            this.resolveSingleCallback.selector
        );
        return (results[0], resolver);
    }

    function resolveCallback(
        bytes calldata response,
        bytes calldata extraData
    ) external view returns (bytes[] memory, address) {
        (bytes[] memory results, address resolver, , ) = _resolveCallback(
            response,
            extraData,
            this.resolveCallback.selector
        );
        return (results, resolver);
    }

    function reverseCallback(
        bytes calldata response,
        bytes calldata extraData
    ) external view returns (string memory, address, address, address) {
        (
            bytes[] memory resolvedData,
            address resolverAddress,
            string[] memory gateways,
            bytes memory metaData
        ) = _resolveCallback(
                response,
                extraData,
                this.reverseCallback.selector
            );

        if (metaData.length > 0) {
            (string memory resolvedName, address reverseResolverAddress) = abi
                .decode(metaData, (string, address));
            address resolvedAddress = abi.decode(resolvedData[0], (address));
            return (
                resolvedName,
                resolvedAddress,
                reverseResolverAddress,
                resolverAddress
            );
        }

        return
            getForwardDataFromReverse(
                resolvedData[0],
                resolverAddress,
                gateways
            );
    }

    function supportsInterface(
        bytes4 interfaceId
    ) public view virtual override returns (bool) {
        return
            interfaceId == type(IExtendedResolver).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    function _resolveCallback(
        bytes calldata response,
        bytes calldata extraData,
        bytes4 callbackFunction
    )
        internal
        view
        returns (bytes[] memory, address, string[] memory, bytes memory)
    {
        MulticallData memory multicallData;
        multicallData.callbackFunction = callbackFunction;
        (bool[] memory failures, bytes[] memory responses) = abi.decode(
            response,
            (bool[], bytes[])
        );
        OffchainLookupExtraData[] memory extraDatas;
        (
            multicallData.resolver,
            multicallData.gateways,
            multicallData.metaData,
            extraDatas
        ) = abi.decode(
            extraData,
            (address, string[], bytes, OffchainLookupExtraData[])
        );
        require(responses.length <= extraDatas.length);
        multicallData.data = new bytes[](extraDatas.length);
        multicallData.failures = new bool[](extraDatas.length);
        uint256 offchainCount = 0;
        for (uint256 i = 0; i < extraDatas.length; i++) {
            if (extraDatas[i].callbackFunction == bytes4(0)) {
                // This call did not require an offchain lookup; use the previous input data.
                multicallData.data[i] = extraDatas[i].data;
            } else {
                if (failures[offchainCount]) {
                    multicallData.failures[i] = true;
                    multicallData.data[i] = responses[offchainCount];
                } else {
                    multicallData.data[i] = abi.encodeWithSelector(
                        extraDatas[i].callbackFunction,
                        responses[offchainCount],
                        extraDatas[i].data
                    );
                }
                offchainCount = offchainCount + 1;
            }
        }

        return (
            _multicall(multicallData),
            multicallData.resolver,
            multicallData.gateways,
            multicallData.metaData
        );
    }

    /**
     * @dev Makes a call to `target` with `data`. If the call reverts with an `OffchainLookup` error, wraps
     *      the error with the data necessary to continue the request where it left off.
     * @param target The address to call.
     * @param data The data to call `target` with.
     * @return offchain Whether the call reverted with an `OffchainLookup` error.
     * @return returnData If `target` did not revert, contains the return data from the call to `target`. Otherwise, contains a `OffchainLookupCallData` struct.
     * @return extraData If `target` did not revert, is empty. Otherwise, contains a `OffchainLookupExtraData` struct.
     * @return result Whether the call succeeded.
     */
    function callWithOffchainLookupPropagation(
        address target,
        bytes memory data
    )
        internal
        view
        returns (
            bool offchain,
            bytes memory returnData,
            OffchainLookupExtraData memory extraData,
            bool result
        )
    {
        result = LowLevelCallUtils.functionStaticCall(address(target), data);
        uint256 size = LowLevelCallUtils.returnDataSize();

        if (result) {
            return (
                false,
                LowLevelCallUtils.readReturnData(0, size),
                extraData,
                true
            );
        }

        // Failure
        if (size >= 4) {
            bytes memory errorId = LowLevelCallUtils.readReturnData(0, 4);
            // Offchain lookup. Decode the revert message and create our own that nests it.
            bytes memory revertData = LowLevelCallUtils.readReturnData(
                4,
                size - 4
            );
            if (bytes4(errorId) == OffchainLookup.selector) {
                (
                    address wrappedSender,
                    string[] memory wrappedUrls,
                    bytes memory wrappedCallData,
                    bytes4 wrappedCallbackFunction,
                    bytes memory wrappedExtraData
                ) = abi.decode(
                        revertData,
                        (address, string[], bytes, bytes4, bytes)
                    );
                if (wrappedSender == target) {
                    returnData = abi.encode(
                        OffchainLookupCallData(
                            wrappedSender,
                            wrappedUrls,
                            wrappedCallData
                        )
                    );
                    extraData = OffchainLookupExtraData(
                        wrappedCallbackFunction,
                        wrappedExtraData
                    );
                    return (true, returnData, extraData, false);
                }
            } else {
                returnData = revertData;
                return (false, returnData, extraData, false);
            }
        }
    }

    /**
     * @dev Finds a resolver by recursively querying the registry, starting at the longest name and progressively
     *      removing labels until it finds a result.
     * @param name The name to resolve, in DNS-encoded and normalised form.
     * @return The Resolver responsible for this name, and the namehash of the full name.
     */
    function findResolver(
        bytes calldata name
    ) public view returns (Resolver, bytes32) {
        (address resolver, bytes32 labelhash) = findResolver(name, 0);
        return (Resolver(resolver), labelhash);
    }

    function findResolver(
        bytes calldata name,
        uint256 offset
    ) internal view returns (address, bytes32) {
        uint256 labelLength = uint256(uint8(name[offset]));
        if (labelLength == 0) {
            return (address(0), bytes32(0));
        }
        uint256 nextLabel = offset + labelLength + 1;
        bytes32 labelHash;
        if (
            labelLength == 66 &&
            // 0x5b == '['
            name[offset + 1] == 0x5b &&
            // 0x5d == ']'
            name[nextLabel - 1] == 0x5d
        ) {
            // Encrypted label
            (labelHash, ) = bytes(name[offset + 2:nextLabel - 1])
                .hexStringToBytes32(0, 64);
        } else {
            labelHash = keccak256(name[offset + 1:nextLabel]);
        }
        (address parentresolver, bytes32 parentnode) = findResolver(
            name,
            nextLabel
        );
        bytes32 node = keccak256(abi.encodePacked(parentnode, labelHash));
        address resolver = registry.resolver(node);
        if (resolver != address(0)) {
            return (resolver, node);
        }
        return (parentresolver, node);
    }

    function _hasExtendedResolver(
        address resolver
    ) internal view returns (bool) {
        try
            Resolver(resolver).supportsInterface(
                type(IExtendedResolver).interfaceId
            )
        returns (bool supported) {
            return supported;
        } catch {
            return false;
        }
    }

    function _multicall(
        MulticallData memory multicallData
    ) internal view returns (bytes[] memory results) {
        uint256 length = multicallData.data.length;
        uint256 offchainCount = 0;
        OffchainLookupCallData[]
            memory callDatas = new OffchainLookupCallData[](length);
        OffchainLookupExtraData[]
            memory extraDatas = new OffchainLookupExtraData[](length);
        results = new bytes[](length);
        bool isCallback = multicallData.name.length == 0;
        bool hasExtendedResolver = _hasExtendedResolver(multicallData.resolver);

        for (uint256 i = 0; i < length; i++) {
            bytes memory item = multicallData.data[i];
            bool failure = multicallData.failures[i];
            if (failure) {
                results[i] = item;
                continue;
            }
            if (!isCallback && hasExtendedResolver) {
                item = abi.encodeCall(
                    IExtendedResolver.resolve,
                    (multicallData.name, item)
                );
            }
            (
                bool offchain,
                bytes memory returnData,
                OffchainLookupExtraData memory extraData,
                bool success
            ) = callWithOffchainLookupPropagation(multicallData.resolver, item);

            if (offchain) {
                callDatas[offchainCount] = abi.decode(
                    returnData,
                    (OffchainLookupCallData)
                );
                extraDatas[i] = extraData;
                offchainCount += 1;
                continue;
            }

            if (success && hasExtendedResolver) {
                // if this is a successful resolve() call, unwrap the result
                returnData = abi.decode(returnData, (bytes));
            }
            results[i] = returnData;
            extraDatas[i].data = multicallData.data[i];
        }

        if (offchainCount == 0) {
            return results;
        }

        // Trim callDatas if offchain data exists
        assembly {
            mstore(callDatas, offchainCount)
        }

        revert OffchainLookup(
            address(this),
            multicallData.gateways,
            abi.encodeWithSelector(BatchGateway.query.selector, callDatas),
            multicallData.callbackFunction,
            abi.encode(
                multicallData.resolver,
                multicallData.gateways,
                multicallData.metaData,
                extraDatas
            )
        );
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

pragma solidity >=0.8.4;

interface ENS {
    // Logged when the owner of a node assigns a new owner to a subnode.
    event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);

    // Logged when the owner of a node transfers ownership to a new account.
    event Transfer(bytes32 indexed node, address owner);

    // Logged when the resolver for a node changes.
    event NewResolver(bytes32 indexed node, address resolver);

    // Logged when the TTL of a node changes
    event NewTTL(bytes32 indexed node, uint64 ttl);

    // Logged when an operator is added or removed.
    event ApprovalForAll(
        address indexed owner,
        address indexed operator,
        bool approved
    );

    function setRecord(
        bytes32 node,
        address owner,
        address resolver,
        uint64 ttl
    ) external;

    function setSubnodeRecord(
        bytes32 node,
        bytes32 label,
        address owner,
        address resolver,
        uint64 ttl
    ) external;

    function setSubnodeOwner(
        bytes32 node,
        bytes32 label,
        address owner
    ) external returns (bytes32);

    function setResolver(bytes32 node, address resolver) external;

    function setOwner(bytes32 node, address owner) external;

    function setTTL(bytes32 node, uint64 ttl) external;

    function setApprovalForAll(address operator, bool approved) external;

    function owner(bytes32 node) external view returns (address);

    function resolver(bytes32 node) external view returns (address);

    function ttl(bytes32 node) external view returns (uint64);

    function recordExists(bytes32 node) external view returns (bool);

    function isApprovedForAll(
        address owner,
        address operator
    ) external view returns (bool);
}

//SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import "./profiles/IABIResolver.sol";
import "./profiles/IAddressResolver.sol";
import "./profiles/IAddrResolver.sol";
import "./profiles/IContentHashResolver.sol";
import "./profiles/IDNSRecordResolver.sol";
import "./profiles/IDNSZoneResolver.sol";
import "./profiles/IInterfaceResolver.sol";
import "./profiles/INameResolver.sol";
import "./profiles/IPubkeyResolver.sol";
import "./profiles/ITextResolver.sol";
import "./profiles/IExtendedResolver.sol";

/**
 * A generic resolver interface which includes all the functions including the ones deprecated
 */
interface Resolver is
    IERC165,
    IABIResolver,
    IAddressResolver,
    IAddrResolver,
    IContentHashResolver,
    IDNSRecordResolver,
    IDNSZoneResolver,
    IInterfaceResolver,
    INameResolver,
    IPubkeyResolver,
    ITextResolver,
    IExtendedResolver
{
    /* Deprecated events */
    event ContentChanged(bytes32 indexed node, bytes32 hash);

    function setABI(
        bytes32 node,
        uint256 contentType,
        bytes calldata data
    ) external;

    function setAddr(bytes32 node, address addr) external;

    function setAddr(bytes32 node, uint256 coinType, bytes calldata a) external;

    function setContenthash(bytes32 node, bytes calldata hash) external;

    function setDnsrr(bytes32 node, bytes calldata data) external;

    function setName(bytes32 node, string calldata _name) external;

    function setPubkey(bytes32 node, bytes32 x, bytes32 y) external;

    function setText(
        bytes32 node,
        string calldata key,
        string calldata value
    ) external;

    function setInterface(
        bytes32 node,
        bytes4 interfaceID,
        address implementer
    ) external;

    function multicall(
        bytes[] calldata data
    ) external returns (bytes[] memory results);

    function multicallWithNodeCheck(
        bytes32 nodehash,
        bytes[] calldata data
    ) external returns (bytes[] memory results);

    /* Deprecated functions */
    function content(bytes32 node) external view returns (bytes32);

    function multihash(bytes32 node) external view returns (bytes memory);

    function setContent(bytes32 node, bytes32 hash) external;

    function setMultihash(bytes32 node, bytes calldata hash) external;
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IABIResolver {
    event ABIChanged(bytes32 indexed node, uint256 indexed contentType);

    /**
     * Returns the ABI associated with an ENS node.
     * Defined in EIP205.
     * @param node The ENS node to query
     * @param contentTypes A bitwise OR of the ABI formats accepted by the caller.
     * @return contentType The content type of the return value
     * @return data The ABI data
     */
    function ABI(
        bytes32 node,
        uint256 contentTypes
    ) external view returns (uint256, bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

/**
 * Interface for the legacy (ETH-only) addr function.
 */
interface IAddrResolver {
    event AddrChanged(bytes32 indexed node, address a);

    /**
     * Returns the address associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated address.
     */
    function addr(bytes32 node) external view returns (address payable);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

/**
 * Interface for the new (multicoin) addr function.
 */
interface IAddressResolver {
    event AddressChanged(
        bytes32 indexed node,
        uint256 coinType,
        bytes newAddress
    );

    function addr(
        bytes32 node,
        uint256 coinType
    ) external view returns (bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IContentHashResolver {
    event ContenthashChanged(bytes32 indexed node, bytes hash);

    /**
     * Returns the contenthash associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated contenthash.
     */
    function contenthash(bytes32 node) external view returns (bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IDNSRecordResolver {
    // DNSRecordChanged is emitted whenever a given node/name/resource's RRSET is updated.
    event DNSRecordChanged(
        bytes32 indexed node,
        bytes name,
        uint16 resource,
        bytes record
    );
    // DNSRecordDeleted is emitted whenever a given node/name/resource's RRSET is deleted.
    event DNSRecordDeleted(bytes32 indexed node, bytes name, uint16 resource);

    /**
     * Obtain a DNS record.
     * @param node the namehash of the node for which to fetch the record
     * @param name the keccak-256 hash of the fully-qualified name for which to fetch the record
     * @param resource the ID of the resource as per https://en.wikipedia.org/wiki/List_of_DNS_record_types
     * @return the DNS record in wire format if present, otherwise empty
     */
    function dnsRecord(
        bytes32 node,
        bytes32 name,
        uint16 resource
    ) external view returns (bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IDNSZoneResolver {
    // DNSZonehashChanged is emitted whenever a given node's zone hash is updated.
    event DNSZonehashChanged(
        bytes32 indexed node,
        bytes lastzonehash,
        bytes zonehash
    );

    /**
     * zonehash obtains the hash for the zone.
     * @param node The ENS node to query.
     * @return The associated contenthash.
     */
    function zonehash(bytes32 node) external view returns (bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

interface IExtendedResolver {
    function resolve(
        bytes memory name,
        bytes memory data
    ) external view returns (bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IInterfaceResolver {
    event InterfaceChanged(
        bytes32 indexed node,
        bytes4 indexed interfaceID,
        address implementer
    );

    /**
     * Returns the address of a contract that implements the specified interface for this name.
     * If an implementer has not been set for this interfaceID and name, the resolver will query
     * the contract at `addr()`. If `addr()` is set, a contract exists at that address, and that
     * contract implements EIP165 and returns `true` for the specified interfaceID, its address
     * will be returned.
     * @param node The ENS node to query.
     * @param interfaceID The EIP 165 interface ID to check for.
     * @return The address that implements this interface, or 0 if the interface is unsupported.
     */
    function interfaceImplementer(
        bytes32 node,
        bytes4 interfaceID
    ) external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface INameResolver {
    event NameChanged(bytes32 indexed node, string name);

    /**
     * Returns the name associated with an ENS node, for reverse records.
     * Defined in EIP181.
     * @param node The ENS node to query.
     * @return The associated name.
     */
    function name(bytes32 node) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IPubkeyResolver {
    event PubkeyChanged(bytes32 indexed node, bytes32 x, bytes32 y);

    /**
     * Returns the SECP256k1 public key associated with an ENS node.
     * Defined in EIP 619.
     * @param node The ENS node to query
     * @return x The X coordinate of the curve point for the public key.
     * @return y The Y coordinate of the curve point for the public key.
     */
    function pubkey(bytes32 node) external view returns (bytes32 x, bytes32 y);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface ITextResolver {
    event TextChanged(
        bytes32 indexed node,
        string indexed indexedKey,
        string key,
        string value
    );

    /**
     * Returns the text data associated with an ENS node and key.
     * @param node The ENS node to query.
     * @param key The text data key to query.
     * @return The associated text data.
     */
    function text(
        bytes32 node,
        string calldata key
    ) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

library HexUtils {
    /**
     * @dev Attempts to parse bytes32 from a hex string
     * @param str The string to parse
     * @param idx The offset to start parsing at
     * @param lastIdx The (exclusive) last index in `str` to consider. Use `str.length` to scan the whole string.
     */
    function hexStringToBytes32(
        bytes memory str,
        uint256 idx,
        uint256 lastIdx
    ) internal pure returns (bytes32 r, bool valid) {
        valid = true;
        assembly {
            // check that the index to read to is not past the end of the string
            if gt(lastIdx, mload(str)) {
                revert(0, 0)
            }

            function getHex(c) -> ascii {
                // chars 48-57: 0-9
                if and(gt(c, 47), lt(c, 58)) {
                    ascii := sub(c, 48)
                    leave
                }
                // chars 65-70: A-F
                if and(gt(c, 64), lt(c, 71)) {
                    ascii := add(sub(c, 65), 10)
                    leave
                }
                // chars 97-102: a-f
                if and(gt(c, 96), lt(c, 103)) {
                    ascii := add(sub(c, 97), 10)
                    leave
                }
                // invalid char
                ascii := 0xff
            }

            let ptr := add(str, 32)
            for {
                let i := idx
            } lt(i, lastIdx) {
                i := add(i, 2)
            } {
                let byte1 := getHex(byte(0, mload(add(ptr, i))))
                let byte2 := getHex(byte(0, mload(add(ptr, add(i, 1)))))
                // if either byte is invalid, set invalid and break loop
                if or(eq(byte1, 0xff), eq(byte2, 0xff)) {
                    valid := false
                    break
                }
                let combined := or(shl(4, byte1), byte2)
                r := or(shl(8, r), combined)
            }
        }
    }

    /**
     * @dev Attempts to parse an address from a hex string
     * @param str The string to parse
     * @param idx The offset to start parsing at
     * @param lastIdx The (exclusive) last index in `str` to consider. Use `str.length` to scan the whole string.
     */
    function hexToAddress(
        bytes memory str,
        uint256 idx,
        uint256 lastIdx
    ) internal pure returns (address, bool) {
        if (lastIdx - idx < 40) return (address(0x0), false);
        (bytes32 r, bool valid) = hexStringToBytes32(str, idx, lastIdx);
        return (address(uint160(uint256(r))), valid);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.13;

import {Address} from "@openzeppelin/contracts/utils/Address.sol";

library LowLevelCallUtils {
    using Address for address;

    /**
     * @dev Makes a static call to the specified `target` with `data`. Return data can be fetched with
     *      `returnDataSize` and `readReturnData`.
     * @param target The address to staticcall.
     * @param data The data to pass to the call.
     * @return success True if the call succeeded, or false if it reverts.
     */
    function functionStaticCall(
        address target,
        bytes memory data
    ) internal view returns (bool success) {
        require(
            target.isContract(),
            "LowLevelCallUtils: static call to non-contract"
        );
        assembly {
            success := staticcall(
                gas(),
                target,
                add(data, 32),
                mload(data),
                0,
                0
            )
        }
    }

    /**
     * @dev Returns the size of the return data of the most recent external call.
     */
    function returnDataSize() internal pure returns (uint256 len) {
        assembly {
            len := returndatasize()
        }
    }

    /**
     * @dev Reads return data from the most recent external call.
     * @param offset Offset into the return data.
     * @param length Number of bytes to return.
     */
    function readReturnData(
        uint256 offset,
        uint256 length
    ) internal pure returns (bytes memory data) {
        data = new bytes(length);
        assembly {
            returndatacopy(add(data, 32), offset, length)
        }
    }

    /**
     * @dev Reverts with the return data from the most recent external call.
     */
    function propagateRevert() internal pure {
        assembly {
            returndatacopy(0, 0, returndatasize())
            revert(0, returndatasize())
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {BytesUtils} from "../wrapper/BytesUtils.sol";

library NameEncoder {
    using BytesUtils for bytes;

    function dnsEncodeName(
        string memory name
    ) internal pure returns (bytes memory dnsName, bytes32 node) {
        uint8 labelLength = 0;
        bytes memory bytesName = bytes(name);
        uint256 length = bytesName.length;
        dnsName = new bytes(length + 2);
        node = 0;
        if (length == 0) {
            dnsName[0] = 0;
            return (dnsName, node);
        }

        // use unchecked to save gas since we check for an underflow
        // and we check for the length before the loop
        unchecked {
            for (uint256 i = length - 1; i >= 0; i--) {
                if (bytesName[i] == ".") {
                    dnsName[i + 1] = bytes1(labelLength);
                    node = keccak256(
                        abi.encodePacked(
                            node,
                            bytesName.keccak(i + 1, labelLength)
                        )
                    );
                    labelLength = 0;
                } else {
                    labelLength += 1;
                    dnsName[i + 1] = bytesName[i];
                }
                if (i == 0) {
                    break;
                }
            }
        }

        node = keccak256(
            abi.encodePacked(node, bytesName.keccak(0, labelLength))
        );

        dnsName[0] = bytes1(labelLength);
        return (dnsName, node);
    }
}

//SPDX-License-Identifier: MIT
pragma solidity ~0.8.17;

library BytesUtils {
    /*
     * @dev Returns the keccak-256 hash of a byte range.
     * @param self The byte string to hash.
     * @param offset The position to start hashing at.
     * @param len The number of bytes to hash.
     * @return The hash of the byte range.
     */
    function keccak(
        bytes memory self,
        uint256 offset,
        uint256 len
    ) internal pure returns (bytes32 ret) {
        require(offset + len <= self.length);
        assembly {
            ret := keccak256(add(add(self, 32), offset), len)
        }
    }

    /**
     * @dev Returns the ENS namehash of a DNS-encoded name.
     * @param self The DNS-encoded name to hash.
     * @param offset The offset at which to start hashing.
     * @return The namehash of the name.
     */
    function namehash(
        bytes memory self,
        uint256 offset
    ) internal pure returns (bytes32) {
        (bytes32 labelhash, uint256 newOffset) = readLabel(self, offset);
        if (labelhash == bytes32(0)) {
            require(offset == self.length - 1, "namehash: Junk at end of name");
            return bytes32(0);
        }
        return
            keccak256(abi.encodePacked(namehash(self, newOffset), labelhash));
    }

    /**
     * @dev Returns the keccak-256 hash of a DNS-encoded label, and the offset to the start of the next label.
     * @param self The byte string to read a label from.
     * @param idx The index to read a label at.
     * @return labelhash The hash of the label at the specified index, or 0 if it is the last label.
     * @return newIdx The index of the start of the next label.
     */
    function readLabel(
        bytes memory self,
        uint256 idx
    ) internal pure returns (bytes32 labelhash, uint256 newIdx) {
        require(idx < self.length, "readLabel: Index out of bounds");
        uint256 len = uint256(uint8(self[idx]));
        if (len > 0) {
            labelhash = keccak(self, idx + 1, len);
        } else {
            labelhash = bytes32(0);
        }
        newIdx = idx + len + 1;
    }
}

{
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 1500
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

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Resolver","name":"","type":"address"},{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"registry","outputs":[{"internalType":"contract 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00000000000000000000000000000000000c2e074ec69a0dfb2997ba6c7d2e1e000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000003868747470733a2f2f756e6976657273616c2d6f6666636861696e2d756e777261707065722e656e732d63662e776f726b6572732e6465762f0000000000000000

-----Decoded View---------------
Arg [0] : _registry (address): 0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e
Arg [1] : _urls (string[]): https://universal-offchain-unwrapper.ens-cf.workers.dev/

-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000c2e074ec69a0dfb2997ba6c7d2e1e
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000040
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000020
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000038
Arg [5] : 68747470733a2f2f756e6976657273616c2d6f6666636861696e2d756e777261
Arg [6] : 707065722e656e732d63662e776f726b6572732e6465762f0000000000000000